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My controller keeps getting a blank screen

I have a Rainbird ESP-M with 7 zones and when we get a thunder storm, my screen goes blank. It happened a few months ago and I took both batteries out and it came back to life and installed a AC surge protector.

It happened again last night. Was thinking of getting a new contoller.
Was reading that it is built in surge protector. is this located on the circuit board?